US11934153B2 - Mechanical horological bearing provided with a damping - Google Patents
Mechanical horological bearing provided with a damping Download PDFInfo
- Publication number
- US11934153B2 US11934153B2 US17/162,404 US202117162404A US11934153B2 US 11934153 B2 US11934153 B2 US 11934153B2 US 202117162404 A US202117162404 A US 202117162404A US 11934153 B2 US11934153 B2 US 11934153B2
- Authority
- US
- United States
- Prior art keywords
- bearing
- damping
- mechanical
- alloy
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active, expires
Links
- 238000013016 damping Methods 0.000 title claims abstract description 64
- 239000007769 metal material Substances 0.000 claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 15
- 229910045601 alloy Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 12
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910000914 Mn alloy Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 claims description 6
- 229910001000 nickel titanium Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 210000004247 hand Anatomy 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 229910000952 Be alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 102000001690 Factor VIII Human genes 0.000 description 1
- 108010054218 Factor VIII Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B5/00—Automatic winding up
- G04B5/02—Automatic winding up by self-winding caused by the movement of the watch
- G04B5/18—Supports, suspensions or guide arrangements, for oscillating weights
- G04B5/19—Suspension of the oscillating weight at its centre of rotation
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
- G04B31/004—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor characterised by the material used
- G04B31/012—Metallic bearings
- G04B31/0123—Metallic bearings with metallic ball bearings and metallic roller bearings
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/01—Alloys based on copper with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/05—Alloys based on copper with manganese as the next major constituent
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B31/00—Bearings; Point suspensions or counter-point suspensions; Pivot bearings; Single parts therefor
- G04B31/02—Shock-damping bearings
Definitions
- the invention relates to a mechanical horological bearing provided with a damping part.
- the invention also relates to a horological movement including such a bearing.
- the invention relates to the field of horological mechanisms and more particularly rotational guides.
- the components of a bearing are usually metallic, in particular steel, brass or copper-beryllium alloy.
- the aim of the invention is to propose a mechanical bearing, in particular a ball bearing, which avoids the aforementioned problems.
- the invention relates to a mechanical horological bearing intended to be arranged on a mechanical movement of a timepiece, the bearing including, coaxial around a common rotation axis, at least one internal frame and at least one external frame forming a running track, as well as a plurality of wheels sliding or rolling in the running track, during a relative movement between the internal frame and the external frame that guide them and wherein at least one of said internal frame and external frame is a dynamic frame.
- the invention is remarkable in that at least one structural part of the bearing is produced from an elastic metal material with high damping capacity, the damping factor of which is greater than 10%, preferably greater than 30%.
- a metal material makes it possible to avoid the problems of damping in synthetic materials, such as the absorption of moisture and the release of gas.
- a metal material has higher quality and is more noble in a luxury timepiece, and is generally much stronger.
- the metal material has a tensile strength greater than 100 MPa, preferably greater than 400 MPa, or even 600 MPa.
- the material is to be chosen from the following list:
- the bearing comprises a first damping piece intended to be positioned between one of said frames and a bridge of the automatic winding system of the movement, the first damping piece forming a part of the bearing produced from an elastic metal material with a high damping capacity.
- the bearing comprises a second damping piece intended to be positioned between one of said frames and means for holding the bearing on the movement, such as a nut or a screw, the second damping piece forming the part of the bearing produced from an elastic metal material with a high damping capacity.
- the first and/or the second piece are washers.
- the first and/or second piece are tubes.
- the external frame is produced from a damping material.
- the internal frame is produced from a damping material.
- said wheels are balls produced from a metal material with a high damping capacity.
- the invention also relates to a horological movement including such a bearing.
- FIG. 1 shows schematically a view in cross section of a part of a mechanical movement with automatic winding, the movement being provided with a ball bearing according to a first embodiment of the invention
- FIG. 2 shows schematically a view in cross section of a part of a mechanical movement with automatic winding, the movement being provided with a ball bearing according to a variant of the first embodiment of the invention
- FIG. 3 shows schematically a damping piece in the form of a washer and a damping piece in the form of a tube
- FIG. 4 is a graph showing a damping factor of certain materials and alloys as a function of the tensile strength of the materials, this graph having been published in the article “Development and application of high damping alloys for noise and vibration control” (ICSV 14, 9-12 Jul. 2007, Cairns AU) by F. Yin.
- the invention relates to a mechanical bearing 1 with automatic winding for a horological movement 10 , for example as shown in FIGS. 1 and 2 .
- the movement 10 comprises an arbor 2 fora display system with hands, an automatic-winding system bridge 3 on which various gear trains and movement elements 10 are assembled, as well as a ball bearing 1 fixed to the bridge 3 of the automatic-winding system by holding means, such as a screw 7 in FIG. 1 and a nut 9 in FIG. 2 .
- This bearing 1 includes, conventionally, coaxial around a common rotation axis D, at least one internal frame 4 , 14 and at least one external frame 5 , 15 .
- the arbor 2 of the display system with hands and the axis D are colinear, the arbor 2 of the display system being assembled on the other side of the bridge with respect to the bearing 1 .
- these internal 4 , 14 and external 5 , 15 frames form a running track 20 , wherein a plurality of wheels 12 , 13 , here balls, slide or roll in a relative movement between the internal frame 4 , 14 and the external frame 5 , 15 .
- the running track 20 is an internal rolling conduit, which holds the wheels 12 , 13 , while enabling them to move in the conduit.
- the invention is illustrated in the figures in the simplified case of a single internal frame 4 , 14 and a single external frame 5 , 15 , a person skilled in the art can extrapolate it to a bearing including a plurality of stages, each of which includes a running track 20 for wheels 12 , 13 between an internal frame 4 , 14 and an external frame 5 , 15 .
- the external frame 5 , 15 is formed by a single external race.
- the external frame 5 , 15 may also be composed of a plurality of juxtaposed external races.
- the bearing 1 is assembled on the bridge 3 .
- the mechanical bearing 1 comprises an axial central passage 16 for passage of the screw 7 and nut 9 .
- the screw 7 is screwed into a stud 8 held by a collar 18 under the bridge 3 of the winding system, while the nut 9 is screwed around the stud 8 .
- the screw 7 or the nut 9 , as well as the stud 8 are disposed on the axis D of the bearing 1 .
- the stud 8 is inserted in the passage 16 under the ball bearing 1 , while the screw 7 or the nut 9 is inserted in the passage 16 over the top of the bearing 1 .
- the internal frame 4 , 14 , or the external frame 5 , 15 is a dynamic frame, that is to say it is movable during the normal functioning of the bearing compared with a static component of a horological movement, such as a plate, bridge 3 , or similar.
- the internal frame 4 , 14 is a dynamic frame and the external frame 5 , 15 is a dynamic frame.
- the internal frame 4 , 14 is a static frame
- the external frame 5 , 15 is a dynamic frame.
- the internal frame is a dynamic frame
- the external frame 5 , 15 is a static frame.
- Such bearings 1 are designed for horological applications, and because of this have very small dimensions:
- the smallest bearings have balls with a diameter of 0.2 mm, for a diameter of 1.6 mm the thicknesses thereof are between 0.4 and 1 mm.
- bearings have balls with a diameter up to 0.6 mm, for a diameter of 5.7 to 20.2 mm the thicknesses thereof range up to 1.5 mm.
- the bearing 1 illustrated in FIG. 1 or 2 is a ball bearing according to the invention, with a diameter of 5.7 mm, a ball diameter of 0.5 mm, a thickness of the internal frame of 1.0 mm, and a thickness of the external frame of 1.0 mm.
- At least one structural part of the bearing 1 is produced from an elastic metal material with a high damping capacity, the damping factor of which is greater than 10%, preferably greater than 30%.
- Structural part means a part of the bearing that is different from the wheels or balls, such as the frames or a damping piece for example.
- the wheels or balls may of course also be made from this same material, but in addition to a structural part of the ball bearing.
- the bearing 1 comprises a first damping piece 6 positioned between the internal frame 4 , 14 and the bridge 3 of the automatic winding system.
- the first piece 6 is arranged on a disk 19 of the bridge of the automatic winding system.
- the bearing 1 furthermore comprises a second damping piece 17 positioned between the internal frame 4 , 14 and the means for holding the bearing 1 on the movement 10 , that is to say the screw 7 or the nut 9 .
- the second piece 17 is arranged in a bed 21 hollowed out in the top face of the internal frame 4 , 14 .
- the damping pieces are washers, or flat disks, provided with a central opening allowing passage of the screw, of the nut or of the stud according to the arrangement thereof.
- the second piece is smaller than the first, since the screw or the nut is narrower.
- the damping pieces are concentric around the axis of the bearing.
- FIG. 3 shows a damping piece 6 , 7 of the first embodiment, which is in the form of a washer.
- a damping piece 22 in the form of a tube is also shown.
- the tubes are hollow elongate pieces arranged in a similar manner to the washers. Tubes may in fact be used for absorbing the vibrations according to another embodiment.
- the damping pieces 6 , 17 , 22 are produced from an elastic metal material with a high damping capacity, the damping factor of which is greater than 10%, preferably greater than 30%. Such a damping factor affords sufficient comfort for the wearer of the timepiece. Thus these damping pieces absorb the vibrations generated by the ball bearing 1 .
- the damping factor 8 also referred to as the loss factor, characterized by the damping capacity of a material according to the following equation:
- ⁇ Ediss Emax ; where Ediss is the energy dissipated by the material during an oscillation cycle, and Emax is the maximum deformation energy stored by the material during an oscillation cycle.
- the metal material is preferably to be chosen from the following list:
- Nitinol has in particular shape-memory and superelasticity qualities.
- the metal material has a tensile strength greater than 100 MPa, preferably greater than 400 MPa, or even 600 MPa.
- the part of the bearing is stronger, and wears less quickly, than with other materials.
- Damping materials made from polymer, as described in the application EP 3418595, have a much lower modulus of elasticity, so that a clearance may occur between the ball bearing and the bridge. Such a clearance may give rise to contacts between the bearing and the bridge, or other components of the movement.
- FIG. 4 shows a graph 30 wherein damping factor values as a function of the tensile strength of metal materials are shown.
- the alloys mentioned above have both a high damping factor, above 10%, or even 30%, and a high tensile strength, above 100, or even 600 MPa.
- the embodiments shown relate to damping pieces. However, it is possible to obtain damping with other components of the bearing.
- At least part of the bearing is produced from an elastic metal material with a high damping capacity, the damping factor of which is greater than 10%, preferably greater than 30%.
- the part made from metal material is one of the frames of the ball bearing.
- the two frames are formed from this metal damping material.
- the geometry of the bearing must be adapted in order to avoid stresses and contact pressures.
- said wheels are balls produced from a metal material with a high damping capacity.
- Materials of the Nitinol type are particularly well suited to producing such balls.
- the invention also relates to a horological movement 10 including at least one bearing 1 as described above.
Abstract
Description
-
- an alloy of manganese at at least 80%, and copper,
- an alloy of copper at at least 80%, preferably at 82%, and of aluminum and nickel, preferably at 12% and 5%,
- an alloy of iron at at least 80%, preferably at 85%, and of chromium and aluminum, preferably at 12% and 3%,
- an alloy of iron at at least 60%, preferably at 65%, and of cobalt, preferably at 35%,
- an alloy of iron at at least 90%, preferably at 95%, and of aluminum and carbon, preferably at 6% and 0.2%,
- an alloy of manganese at at least 70%, preferably at 73%, and of copper, nickel and iron, preferably at 20%, 5% and 2%, the alloy having a Vickers hardness number of at least 130, and
- an alloy of the Nitinol type comprising nickel at at least 50%, preferably at 55%, and titanium, preferably at 45%.
-
- diameter between 1.6 mm and 20.2 mm, bounds included;
- diameter of the balls when the wheels are balls, between 0.2 mm and 0.6 mm, bounds included;
- thickness of the
internal frame - thickness of the
external frame
where Ediss is the energy dissipated by the material during an oscillation cycle, and Emax is the maximum deformation energy stored by the material during an oscillation cycle.
-
- an alloy of manganese at at least 80%, and of copper,
- an alloy of copper at at least 80%, preferably 82%, and of aluminum and nickel, preferably at 12% and 5%,
- an alloy of iron at at least 80%, preferably at 85%, and of chromium and aluminum, preferably at 12% and 3%, such as the commercial alloy “Silentalloy”,
- an alloy of iron at at least 60%, preferably at 65%, and of cobalt, preferably at 35%, such as the commercial alloy “Gentalloy”,
- an alloy of iron at at least 90%, preferably at 95%, and of aluminum and carbon, preferably at 6% and 0.2%,
- an alloy of manganese at at least 70%, preferably at 73%, and of copper, nickel and iron, preferably at 20%, 5% and 2%, such as the commercial alloy “M2052”, the alloy having a Vickers hardness number of at least 130, and
- an alloy of the Nitinol type comprising nickel at at least 50%, preferably at 55%, and titanium, preferably at 45%.
Claims (12)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20159595.6A EP3872577A1 (en) | 2020-02-26 | 2020-02-26 | Mechanical timepiece bearing equipped with a damping part |
EP20159595 | 2020-02-26 | ||
EP20159595.6 | 2020-02-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20210263473A1 US20210263473A1 (en) | 2021-08-26 |
US11934153B2 true US11934153B2 (en) | 2024-03-19 |
Family
ID=69740269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US17/162,404 Active 2041-11-23 US11934153B2 (en) | 2020-02-26 | 2021-01-29 | Mechanical horological bearing provided with a damping |
Country Status (5)
Country | Link |
---|---|
US (1) | US11934153B2 (en) |
EP (1) | EP3872577A1 (en) |
JP (1) | JP7254108B2 (en) |
KR (1) | KR102635007B1 (en) |
CN (1) | CN113311685A (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH244128A (en) | 1944-11-15 | 1946-08-31 | Sa Benjamin Pellaton | Ball bearing. |
JP2002311161A (en) | 2001-04-13 | 2002-10-23 | Seiko Epson Corp | Eccentricity clock having spindle |
JP2007309480A (en) | 2006-05-22 | 2007-11-29 | Jtekt Corp | Rolling bearing device |
US20140328150A1 (en) * | 2013-05-01 | 2014-11-06 | Rolex Sa | Shock absorber body for a balance of a horological oscillator |
EP3418595A1 (en) | 2017-06-19 | 2018-12-26 | MPS Micro Precision Systems AG | Ball bearing for horology |
EP3460275A1 (en) | 2017-09-25 | 2019-03-27 | Rolex Sa | Timepiece bearing |
CN109557799A (en) | 2017-09-25 | 2019-04-02 | 劳力士有限公司 | Bearing for clock and watch |
US20200301368A1 (en) * | 2019-03-18 | 2020-09-24 | Montres Jaquet Droz Sa | Timepiece dial provided with a three-dimensional decoration |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH271422A (en) * | 1948-02-05 | 1950-10-31 | Roulements A Billes Miniatures | Device for pivoting on balls of an oscillating weight for the automatic winding of a timepiece. |
CH330889A (en) * | 1956-06-11 | 1958-06-30 | L Glocker Paul | Roskopf watch |
DE102005007986A1 (en) | 2005-02-22 | 2006-08-31 | Schaeffler Kg | Roller bearing in particular for use in vehicle, comprising noise absorbing metal ring with threaded outer surface |
JP2012198041A (en) * | 2011-03-18 | 2012-10-18 | Seiko Instruments Inc | Slip structure for watch wheel and watch using the same |
-
2020
- 2020-02-26 EP EP20159595.6A patent/EP3872577A1/en active Pending
-
2021
- 2021-01-29 US US17/162,404 patent/US11934153B2/en active Active
- 2021-02-15 JP JP2021021484A patent/JP7254108B2/en active Active
- 2021-02-25 KR KR1020210025947A patent/KR102635007B1/en active IP Right Grant
- 2021-02-26 CN CN202110216116.9A patent/CN113311685A/en active Pending
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH244128A (en) | 1944-11-15 | 1946-08-31 | Sa Benjamin Pellaton | Ball bearing. |
JP2002311161A (en) | 2001-04-13 | 2002-10-23 | Seiko Epson Corp | Eccentricity clock having spindle |
JP2007309480A (en) | 2006-05-22 | 2007-11-29 | Jtekt Corp | Rolling bearing device |
US20140328150A1 (en) * | 2013-05-01 | 2014-11-06 | Rolex Sa | Shock absorber body for a balance of a horological oscillator |
EP3418595A1 (en) | 2017-06-19 | 2018-12-26 | MPS Micro Precision Systems AG | Ball bearing for horology |
EP3460275A1 (en) | 2017-09-25 | 2019-03-27 | Rolex Sa | Timepiece bearing |
US20190094808A1 (en) * | 2017-09-25 | 2019-03-28 | Rolex Sa | Timepiece bearing |
CN109557799A (en) | 2017-09-25 | 2019-04-02 | 劳力士有限公司 | Bearing for clock and watch |
JP2019070642A (en) | 2017-09-25 | 2019-05-09 | ロレックス・ソシエテ・アノニムRolex Sa | Clock bearing |
US20200301368A1 (en) * | 2019-03-18 | 2020-09-24 | Montres Jaquet Droz Sa | Timepiece dial provided with a three-dimensional decoration |
Non-Patent Citations (2)
Title |
---|
Dynalloy, Introduction to Nitinol, Mar. 2018, https://web.archive.org/web/20180319093324/https://www.dynalloy.com/nitinol.php. * |
European Search Report for EP 20 15 9595 dated Aug. 22, 2020. |
Also Published As
Publication number | Publication date |
---|---|
EP3872577A1 (en) | 2021-09-01 |
US20210263473A1 (en) | 2021-08-26 |
JP2021135293A (en) | 2021-09-13 |
CN113311685A (en) | 2021-08-27 |
KR102635007B1 (en) | 2024-02-07 |
JP7254108B2 (en) | 2023-04-07 |
KR20210109468A (en) | 2021-09-06 |
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